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ADM1031 Folha de dados(PDF) 2 Page - Analog Devices |
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ADM1031 Folha de dados(HTML) 2 Page - Analog Devices |
2 / 32 page REV. 0 –2– ADM1031–SPECIFICATIONS1 (T A = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.) Parameter Min Typ Max Unit Test Conditions/Comments POWER SUPPLY Supply Voltage, VCC 3.0 3.30 5.5 V Supply Current, ICC 1.4 3 mA Interface Inactive, ADC Active 32 50 µA Standby Mode TEMPERATURE-TO-DIGITAL CONVERTER Local Sensor Accuracy ± 1 ± 3 °C Resolution 0.25 °C Remote Diode1 Sensor Accuracy ±0.5 ±1 °C60°C ≤ T D ≤ 100°C Remote Diode2 Sensor Accuracy ±0.5 ±1.75 °C60°C ≤ T D ≤ 100°C Resolution 0.125 °C Remote Sensor Source Current 180 µA High Level 11 µA Low Level OPEN-DRAIN DIGITAL OUTPUTS ( THERM, INT, FAN_FAULT, PWM_OUT) Output Low Voltage, VOL 0.4 V IOUT = –6.0 mA; VCC = 3 V High-Level Output Leakage Current, IOH 0.1 1 µAV OUT = VCC; VCC = 3 V OPEN-DRAIN SERIAL DATA BUS OUTPUT (SDA) Output Low Voltage, VOL 0.4 V IOUT = –6.0 mA; VCC = 3 V High-Level Output Leakage Current, IOH 0.1 1 µAV OUT = VCC SERIAL BUS DIGITAL INPUTS (SCL, SDA) Input High Voltage, VIH 2.1 V Input Low Voltage, VIL 0.8 V Hysteresis 500 mV DIGITAL INPUT LOGIC LEVELS 2 (ADD, THERM, TACH1/2) Input High Voltage, VIH 2.1 V Input Low Voltage, VIL 0.8 V DIGITAL INPUT LEAKAGE CURRENT Input High Current, IIH –1 µAVIN = VCC Input Low Current, IIL 1 µAV IN = 0 Input Capacitance, CIN 5pF FAN RPM-TO-DIGITAL CONVERTER Accuracy ±6% 60 °C ≤ T A ≤ 100°C Full-Scale Count 255 TACH Nominal Input RPM 4400 RPM Divisor N = 1, Fan Count = 153 2200 RPM Divisor N = 2, Fan Count = 153 1100 RPM Divisor N = 4, Fan Count = 153 550 RPM Divisor N = 8, Fan Count = 153 Conversion Cycle Time 637 ms SERIAL BUS TIMING 3 Clock Frequency, fSCLK 10 100 kHz See Figure 1 Glitch Immunity, tSW 50 ns See Figure 1 Bus Free Time, tBUF 4.7 µs See Figure 1 Start Setup Time, tSU;STA 4.7 µs See Figure 1 Start Hold Time, tHD;STA 4 µs See Figure 1 Stop Condition Setup Time tSU;STO 4 µs See Figure 1 SCL Low Time, tLOW 1.3 µs See Figure 1 SCL High Time, tHIGH 450 µs See Figure 1 SCL, SDA Rise Time, tR 1000 ns See Figure 1 SCL, SDA Fall Time, tF 300 ns See Figure 1 Data Setup Time, tSU;DAT 250 ns See Figure 1 Data Hold Time, tHD;DAT 300 ns See Figure 1 NOTES 1Typicals are at T A = 25 °C and represent most likely parametric norm. Shutdown current typ is measured with V CC = 3.3 V. 2ADD is a three-state input that may be pulled high, low or left open-circuit. 3Timing specifications are tested at logic levels of V IL = 0.8 V for a falling edge and VIH = 2.2 V for a rising edge. Specifications subject to change without notice. |
Nº de peça semelhante - ADM1031 |
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Descrição semelhante - ADM1031 |
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